Trudeau said Canada would, in response, put 25 percent tariffs on $20.5 billion worth of unspecified U.S. goods. China announced levies on U.S. food imports and halted the sale of Chinese goods to 15 American companies. In Mexico, there were calls for boycotts of U.S. companies and products.

The nation’s top three trading partners are rolling out levies on a wide range of products, including soybeans, meat and grains, in the escalating trade war.